OTTER TAIL CORP

Ticker: OTTR CUSIP: 689648103 Class: Common Stock

SIMPLEX TRADING, LLC's Holding History (CIK: 0001488542)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025
Shares 399 Value ($000) $32 Avg Close $80.23 Range $73.20 - $85.91
Q3 2025
Shares 356 Value ($000) $0 Avg Close $79.81 Range $73.77 - $85.12
Q4 2024
Shares 68 Value ($000) $0 Avg Close $75.57 Range $70.66 - $85.02
Q1 2024
Shares 623 Value ($000) $0 Avg Close $82.56 Range $76.18 - $94.24
Q3 2022
Shares 4 Value ($000) $0 Avg Close $66.11 Range $56.18 - $75.76
Q2 2022
Shares 7,024 Value ($000) $471 Avg Close $57.93 Range $52.29 - $62.99
Q1 2022
Shares 481 Value ($000) $30 Avg Close $56.77 Range $53.45 - $64.83
Q4 2021
Shares 2,145 Value ($000) $153 Avg Close $58.09 Range $49.63 - $64.66
Q2 2018
Shares 1 Value ($000) $0 Avg Close $36.40 Range $34.04 - $39.53
Q1 2018
Shares 12 Value ($000) $0 Avg Close $33.54 Range $29.25 - $35.88
Q4 2017
Shares 102 Value ($000) $4 Avg Close $36.46 Range $34.36 - $38.83
Q1 2017
Shares 17 Value ($000) $0 Avg Close $29.42 Range $27.80 - $31.55
Q4 2016
Shares 392 Value ($000) $15 Avg Close $28.65 Range $25.36 - $32.91
Q3 2016
Shares 603 Value ($000) $20 Avg Close $26.40 Range $24.99 - $27.92
Q2 2016
Shares 33 Value ($000) $1 Avg Close $22.72 Range $21.07 - $25.45